The GMT 400 and similar GMT 480 was the platform used for the Chevrolet C/K and GMC Sierra full-size pickup trucks beginning with the 1988 model year. [1] The GMT 410, GMT 420, GMT 425, and GMT 430 variants were derived for full-size SUVs, including the 1992–1994 Chevrolet Blazer and 1995–2000 Tahoe, and the GMC Yukon from late 1991 to 2000.

GMT (General Motors Truck) is a nomenclature used by General Motors to designate multiple vehicle platforms. In use since the early 1980s, the GMT nomenclature is used for light trucks, full-size SUVs, and vans, along with several medium-duty trucks.

These platforms are established sets of axles, suspensions, and steering mechanisms which fit various bodies and powertrains from various marques that GM owns.

Jan 3, 2024 · The GMT 400, a revolutionary GM platform introduced in Chevrolet trucks from 1988 to 2000, stands out as a pinnacle of innovation and versatility, surpassing its predecessor, the "square body" generation that concluded in 1987.

The GMT 400 and similar GMT 480 was the platform for the 1988-1998 model year full-size pickup truck. The GMT 410, GMT 420, GMT 425, and GMT 430 were used for full-size SUVs from late 1991 to 2000. This was the first GMT designation for the C (RWD) and K (4WD/AWD) full-size trucks and SUVs.

Dec 2, 2009 · Here is my condensed history of the 88-98 GMT400 trucks. This is a basic history of the C/K line of trucks. I posted this in the engine performance + maintenance section as there really is no other place on the forum for it...

Jun 29, 2010 · The GMT 410, GMT 420, GMT 425, and GMT 430 were used for full-size SUVs from 1991 to 2000. This was the first GMT designation for the C (RWD) and K (4WD/AWD) full-size trucks and SUV's. * The GMT800 is the basis for the previous generation Chevrolet Silverado full-size pickup truck.

Jan 17, 2025 · The GMT 410, GMT 420, GMT 425, and GMT 430 were derived for full-size SUVs, including the 1992-1994 Chevrolet Blazer and 1995-2000 Tahoe, and the GMC Yukon from 1992 to 2000. This was the first GMT designation for the …

Mar 29, 2017 · They switched to a metric bolt pattern somewhere around then (180mm instead of 6.5" for a gm 8lug wheel) Edit:looked around online, apparently the metric lug pattern is only on the large 8 lug wheels 2011 to present. Math is tough for some. It's not my strong suit.

Jun 3, 2005 · Effectively, GM gives each vehicle platform/project a code number, and strips it of its name. While this helps employees quickly identify product, it can possibly confuse the uninitiated. The following is a brief run-down of GM Truck related platform codes, in an attempt to clarify any potential confusion.